MetadataShow full item record
PublisherAMER PHYSICAL SOC
CitationArslanagić, S., & Ziolkowski, R. W. (2018). Highly Subwavelength, Superdirective Cylindrical Nanoantenna. Physical Review Letters, 120(23), 237401. https://doi.org/10.1103/PhysRevLett.120.237401
JournalPHYSICAL REVIEW LETTERS
Rights© 2018 American Physical Society.
Collection InformationThis item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at email@example.com.
AbstractA superdirective cylindrical nanoantenna is demonstrated with a multilayered cylindrical metamaterial-inspired structure. Targeting specific scattering coefficients for the dipole and higher-order modes, the ideal limit of needle radiation is demonstrated. A five-layer system is optimized to demonstrate its approach to the theoretical directivity bound. While the resulting structure is scalable to any frequency regime, its highly subwavelength overall size (lambda(0)/10) takes advantage of combinations of positive and negative permittivity materials in the optical regime.
VersionFinal published version
SponsorsAustralian Research Council (ARC) [DP160102219]